A crown of gold mixed with silver Animation Play

A family of transition metals Animation Play

Ability to react with metals Animation Play

Absorption of light by transition metal ions Animation Play

Acid dissociation constant and pH (1) Student activity Play

Acid dissociation constant for ethanoic acid Animation Play

Acid dissociation constant for lactic acid Animation Play

Acid dissociation constant Ka Student activity Play

Acids (2) Student activity Play

Acids and alkalis Class activity Play

Acid–base reactions in a non-aqueous medium Animation Play

Alkalinity of hydroxides Animation Play

All salts are electrolytes Animation Play

Alloys of gold Animation Play

Alloys of precious metals Slideshow Play

Alloys of tin and precious metals Student activity Play

Alloys of tin and precious metals Whiteboard exercise Play

Aluminium chloride Animation Play

Aluminium – lead – silver Whiteboard exercise Play

Ammonium cation Animation Play

Ammonium nitrate Animation Play

Amphoteric metal hydroxides Animation Play

Archimedes' Experiment Student activity Play

Arrangement of chemical elements in the periodic table Student activity Play

Atomic number Student activity Play